# Use the official Python 3.11 slim image
FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Install system dependencies required for OpenCV and other ML libraries
RUN apt-get update && apt-get install -y \
    libgl1 \
    libglib2.0-0 \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements file first to leverage Docker cache
COPY requirements.txt .

# Install Python dependencies
# Using --no-cache-dir to keep the image size small
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# Hugging Face Spaces require running as a non-root user (UID 1000)
RUN useradd -m -u 1000 user
USER user

# Set environment variables
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    PYTHONUNBUFFERED=1

# Copy the rest of the application code
COPY --chown=user:user . .

# Expose port 7860, which is the default for Hugging Face Spaces
EXPOSE 7860

# Command to run the FastAPI application using uvicorn
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]